Christian Era definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
the era beginning with the year 1, formerly thought to be that of the birth of Jesus Christ (born probably c. 8-4 ): (or ) marks dates in this era, (or ) marks dates before it
Christian Era definition by American Heritage Dictionary
The period beginning with the birth of Jesus.